Bug report Python script Mail is possible?
import bpy

bl_info = {
    'name': 'Add-on',
    'category': 'User'
}

class MyAddonPreferences(bpy.types.AddonPreferences):
    bl_idname = __name__
    def draw(self, context):
        layout = self.layout
        col = layout.column()
        col.operator("wm.url_open", text="Report a Bug").url="mailto:someone@somemail.somedomain"

def register():
    bpy.utils.register_class(MyAddonPreferences)

def unregister():
    bpy.utils.unregister_class(MyAddonPreferences)